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This paper studies the design of hardware system and implementation of program algorithm for emotion robot, then focuses on the specific of wireless communication subsystem and related key technique.
We propose a sparse probabilistic learning approach for nonlinear channel equalization in wireless communication systems, by using the relevant vector machine (RVM) technique. In particular, we propose two versions of the RVM based equalizer: 1) maximum a posterior RVM (MAP-RVM), 2) marginalized RVM (MRVM). Compared to the standard support vector machine (SVM) method, the proposed RVM approach not...
This paper addresses the spectrum-sharing for wireless communication with a licensee-primary and a secondary users interfering with each other. We propose a new practical power control policy for the secondary user, under outage performance requirements for both users, with partial knowledge of channel state information.
This paper investigates multi-cell coordinated shared relay with joint processing (JP) scheme in interference limited network. In general, multi-cell coordinated shared relay network increases the Signal to Interference-plus-Noise Ratio (SINR) in cell edge users, but resource usage efficiency is decreased by two-phase transmission of relay protocol. We propose JP of cooperating BSs and shared relay...
Using chalk is not only laborious, but it also produces a lot of chalk dust, polluting the air and adversely affecting the health of the students and teachers. This design uses ARM9 board for hand-held terminal hardware and uC/OS-II embedded real time operating system for hand-held terminal software. When teacher writes on a book-size touch screen with an electrical pen, handwriting signal will be...
As China's continuous improvement in the degree of information, the wireless communication network has covered all regions of the country, and information has also brought a great deal of information network security issues. In this paper, firstly, the information security emergency response procedures and disposal system are proposed according to the comprehensive analysis of weak links in information...
The purpose of this paper is to presents modeling and designing of Circular microstrip patch antenna. The S and Z parameters of a Circular patch microstrip antenna are investigated and optimization is performed either by varying the Patch radius 'R' with keeping dielectric constant '??r' fixed and by varying the dielectric constant '??r' of a material with keeping Patch radius 'R' constant. The antenna...
The projective geometry (PG) based low density parity check (LDPC) codes are gaining popularity due to their ease of encoding and decoding by the simple majority logic technique. These codes have a flurry of other useful properties, making them ideal candidates/codes for error correction for future wireless applications. This paper brings out a detailed study on the performance of PG codes for different...
A high linearity power amplifier (PA) is demonstrated for wireless communications at 2.4 GHz and is implemented in a 0.18 ??m silicon germanium (SiGe) BiCMOS process. This PA is composed of two stages and achieves a good performance on linearity: when the input power is 0 dBm, the output 1 dB compression point (OP1 dB) is 20.3 dBm, which is only about 0.7 dBm less than the output power. The layout...
Modern networks provide QoS model to go beyond best-effort services, but current QoS models are oriented towards low level network parameters (e.g. bandwidth, latency, jitter) application developers on the other hand are interested in quality models that are meaningful to the end-user and therefore struggle to bridge the gap between networks and application QoS models. Network-aware applications are...
The following topics were dealt with: EM field theory; computational electromagnetics; circuit analysis; passive devices and circuits; antennas; wireless and mobile communication; space solar power station and rectannas; microwave devices and circuits; optoelectronics and photonic devices.
Based on the application status and theory of static phase generator (SPG), it is significant in energy saving and management improving to develop a multi-electromotor SPG System based on wireless communication (SPGSWC). The SPGSWC passed by the experiments and the tests. The result shows that it has efficient compensation, realized the function of the wireless communication in the system, sufficed...
Sensor networks using mobile robots have been proposed to provide more flexible and efficient sensing. One of the key challenges under this paradigm is a management of transferring a huge amount of data. In this paper, we propose a model and protocol for session control exploiting controlled mobility in multi-robot sensor networks (MRSNs) to transfer the huge amount of data efficiently. Since a communication...
Searching and sorting misplaced books is a difficult task often carried out by the library personnel. Quite often, librarians are busy with searching misplaced books which are left in wrong locations by library users. It is quite difficult and almost impractical to place back all books to their assigned locations daily. To overcome this, radio frequency identification (RFID) based Intelligent shelving...
Wireless communication in unknown and cluttered environments is an important problem which has several practical applications such as communication in urban areas and disaster areas. This paper presents a method to optimize communication efficiency in such environments. The method applies to communication between a transmitting array and receiving array where the transmitting array sends out a 'probe'...
This paper deals with the development of several simplification strategies, which can be applied to those communication problems analyzed using the Bayesian formulation. Specifically, we will focus our interest on the multiuser detection problem in wireless DS/CDMA environments, where the complexity of the theoretical algorithm grows exponentially with the number of active users as well as with the...
Wireless communication occurs through continuous fields, over regions of space. Although the communication channel may be modelled in terms of infinite dimensional vector spaces, it is paramount to develop finite dimensional approximations for this channel. We extend previous work which examined the fundamental finite dimensionality of fields over a finite region of space to incorporate restricted...
Spectrum is one of the most precious radio resource. With the increasing demand for wireless communication, efficiently using the spectrum resource has become an essential issue. With the Federal Communications Commission's (FCC) spectrum policy reform, secondary spectrum sharing has become a viable option. One of the policy reforms introduces the concept of an interference temperature-the total allowable...
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